baber/WOPTO huggingface dataset:
Patent GB-1276815-A (GB)
Title: A system for selecting one of a plurality of control units for tuning a wave signal receiver
Inventor: HEAGNEY ANTHONY THOMAS
IPC: H03J3/18
Filed: 1970-02-04
Abstract: 1276815 Radio receiver tuning; selection gate and bi-stable circuits MOTOROLA Inc (A T Heagney) 4 Feb 1970 5396/70 Headings H3Q and H3T [Also in Division G4] In a signal receiver having a voltage variable capacitor 14, 20, 31 for tuning, switching circuits 45, 46 are selectable by bi-state switches such as push-button switches 85, 86 so that by operating a switch 85 or 86 one switching circuit is selected to apply the tuning voltage from that switching circuit to the voltage variable capacitor while the remaining switching circuits are rendered inoperative and the operative state of the selected switching circuit and the inoperative state of the remaining switching circuit(s) is retained despite immediate restoration of the selected switch, until actuation of another one of the switches 85, 86. By closing switch 88 to turn the receiver on a voltage is coupled via capacitor 90 to the base of transistors 48 and 50a so as to turn them off. Transistor 48a is then biased on and the potential from B + is connected via transistor 48a to the potentiometer 60a which biases the voltage variable capacitors 14, 20, 31 via resistors 65, 66, 67, so that the switching circuit 46 always tunes the receiver when it is first switched on. As capacitor 90 charges transistor 50 turns on and maintains transistor 48 off. The transistors 48, 50 and 48a, 50a are bi-stable circuits and when pushbutton 85 is momentarily closed this causes transistors 50 and 48a to turn off and transistors 48 and 50a to turn on so that now the potential B + is applied via potentiometer 60 to tune the variable capacitors 14, 20, 31. The arm 70 of potentiometer 60 can be varied manually and a milliamp meter 62 indicates the frequency to which the receiver is tuned. One or more of the control units 45, 46 can be located at the receiver or can be remotely located. In an automobile the control units can be positioned in arm rests of the front and back seats. In a modified control arrangement (Fig. 2, not shown), tuning voltages from preset potentiometers (120-120d) are selectively connected by one of transistors 114, 114a-of bi-stable pair switches (112 to 112d) by momentary operation of associated push-button switches (100, 102, 104, 106, 108). Operation of push-button (110) turns off transistor (116) which turns on its associated transistor (114) to connect the tuning voltage from potentiometer (120) to the voltage variable capacitors of the receiver. The associated transistors (114a) of the other switches (112a-112d) and (152) of a manual tuning arrangement are all biased off. For manual tuning push-button (110) is momentarily closed to turn transistor (152) on and connect a manually variable voltage from potentiometer (145) to the voltage variable capacitors, the associated transistors 114 of the other switches (112-112d) being biased off. A capacitor (162) is connected so that when the receiver is switched on by a switch (168) the transistor (152) is always switched on for manual tuning.
Patent GB-715220-A (GB)
Title: Method for the continuous manufacture of polyvinyl chloride
IPC: C08F14/06
Filed: 1952-02-29
Abstract: Polyvinyl chloride is manufactured from undiluted vinyl chloride by a process in which an amount of vinyl chloride kept essentially constant is maintained boiling in such a manner that a comparatively small portion is polymerized under the action of a catalyst while a portion of the formed hot mixture of monomer and polymer is continuously discharged and freed from polymer by at least two separations, and in which monomer vapour as well as the liquid monomer obtained in the separation of the polymer, and an amount of fresh monomer corresponding to the formed polymer, is added to the boiling vinyl chloride.  The reaction may be catalysed by ultra-violet light or a chemical catalyst such as a peroxide or persulphate may be used.
Patent GB-730423-A (GB)
Title: Improvements in or relating to a forced-flow steam or hot-water boiler
IPC: F24H1/44
Filed: 1953-02-27
Abstract: 730,423. Steam or hot-water boilers. MATSUMOTO, G., MASUDA, R., and ISHIDA, T. Feb. 27, 1953 [March 5, 1952], No. 5491/53. Classes 64 (1) and 123 (2). A steam boiler, which may also be used as a hot-water boiler, comprises a cylindrical casing c which defines a combustion chamber 6 and locates a pair of slightly-inclined steam-andwater cylinders 2, 3 provided with partition plates 10, 11, the latter having water circulation gaps 17, 18 at their upper and lower ends and dividing the cylinders into front and rear portions which are connected, as shown, by banks of oblique semi-circular tubes 4<SP>1</SP>, 4. The casing c is double-walled to provide a preheating chamber 1 for feedwater which is fed thereto from a gravitation tank ,&c. through a valve 14 and then supplied to the cylinders 2, 3 by a pump 12 through a pipe 15 and pipes 13, 16 respectively. Preferably the top of the casing c is fitted with an apertured baffle 8 below a chimney 9. Steam may be withdrawn from the top of one of the cylinders, say 2, through a sinuous pipe 7 which leads through the combustion chamber 6 to an outlet and serves as a super-heater. Two or more pairs of cylinders 2, 3 may be fitted in series, one pair above another, within a common casing c.
Patent GB-1062406-A (GB)
Title: Improvements relating to superconductive coils
IPC: H01F6/06
Filed: 1966-02-08
Abstract: 1,062,406. Superconductor coils. SOC. GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM). Feb. 8, 1966 [March 17, 1965], No. 5508/66. Heading H1K. A coil for use in the superconductive state (Figs. 1 and 2, not shown), is made by stacking a plurality of elements each of which is a slit annulus of superconductor 1 largely covered on one of its faces with a material 4 such as copper or aluminium serving as insulation at the operating temperature of the coil. The exposed region 5 on the insulated face is used to make contact to the uninsulated face of the next annulus. The slits of successive annuli are arranged so that current must follow a helical path through the coil. As shown, in a second coil a first group of uninsulated superconductor split annuli 6 have their ends displaced axially to form a first helix and are interleaved with a second group 7 each annulus of which has one face insulated. By arranging the slits as shown the second group of annuli connect the annuli of the first group in series so that current through the coil follows a generally helical path.
Patent GB-102250-A (GB)
Title: Improvements in or relating to Well-boring Tools.
Inventor: CAMPBELL LAWRENCE STEWART
IPC: E21B10/32
Filed: 1916-04-17
Abstract: 102,250. Campbell, L. S., and Grant, J. Nov. 13, 1915, [Convention date]. Bore - hole apparatus. - A well-boring tool comprises a shell or socket 1 in which a holder or centre block 5 is fixed by one or more bayonetjoints 4, cutters 8 being connected to the holder by hooked rods 10 which are pressed upwardly by a spring 12 within the holder. A reduced lower portion of the holder carries lugs 9 which engage recesses in the cutters to prevent disengagement of the cutters should the rods 10 break. Above this lower portion, surfaces 19, 20 are provided on the holder to engage similar surfaces on the cutter shanks to prevent collapsing of the cutters when in operation. The cutters are collapsed to permit passage through a well casing by pulling them downwards so that the shanks are freed from the surfaces 19, 20 of the holder. Shoulders 14. are provided on the cutters to engage the lower end of the shell. The holder 5 is locked in the shell, either by a key adapted to fall vertically in a slot in the holder and engage the lugs of the bayonet-joints, or by a pin inserted through a keyhole slot in the shell. For rotary boring, the well casing is provided with cut-out parts engaging the cutters, and has internal grooves for the passage of fluid.
Patent GB-1465362-A (GB)
Title: Catheterization apparatus
IPC: A61B10/00
Filed: 1974-02-07
Abstract: 1465362 Plugs; plug valves INTERNATIONAL PAPER CO 7 Feb 1974 [12 Feb 1973] 05607/74 Heading B8T [Also in Division A5] Apparatus for obtaining an uncontaminated urine sample from a patient, comprises a collection vessel 10 having an open top, a rigid plastics cap 12 positioned around said open top and having an aperture 24 therethrough and through which extends a catheter 14 having an open distal end 38 in vessel 10 and a proximal portion extending above the cap and provided with inlets 40, and a member 22 pivotably mounted in said cap and having a bore 34 therethrough for passage of the catheter when the member is vertical with its lower open end above aperture 24, the catheter being removable from the vessel by sliding through bore 34, and member 22 being pivotable to a horizontal position on removal of the catheter when an external surface 36 of said member blocks aperture 24 to seal the vessel, cap 20 being screwed on to said vessel. When collecting the urine sample, the cap is only loosely screwed on vessel 10 to allow for venting of air. Venting may also occur between bore 34 and the catheter. A yieldable flared portion 42 is provided adjacent the distal end of the catheter to prevent too easy removal of the catheter from vessel (60). In an alternative embodiment, an elastomeric tapered plug (76), Fig. 4 (not shown), seats in the distal end of the catheter and on pulling the catheter out of vessel (60), fits into aperture (68) to seal the vessel instead of a pivotal member 22 being provided A yieldable stop (74) is provided on the catheter adjacent discharge openings (72) therein. The cap (62) has ribs (63) spaced around its depending inner wall. During collection of a urine sample, the cap is positioned on vessel (60) with the ribs contacting an annular ridge (65) around the open top of the vessel to allow venting. After collection, the cap is pressed fully down on the vessel, as shown in Fig. 4, to provide a sealing contact therewith. The collection vessel may be a centrifuge tube.
Patent GB-594677-A (GB)
Title: Improvements in circular knitting machines
IPC: D04B9/26
Filed: 1945-03-08
Abstract: 594,677. Knitting-machines. LACEY, S. W. B. March 8, 1945, No. 5748. [Class 74 (ii)] The yarn finger carrier of a vertical striping or patterning mechanism, in a circular machine, is shogged by means of a worm and toothed segment or wheel which angularly adjusts about its axis a member coaxial with the carrier. The finger carrier A is mounted on the lower end of a shaft B. In a stationary cylinder machine, the shaft is secured at its upper end to a member C, Fig. 1, which is mounted at its upper end in a bearing at the end of a vertically adjustable arm D and, at its lower end, in a bearing F. The member C carries a toothed segment H engaging a worm J, Fig. 2 (not shown), by which it can be rotatably adjusted to shog the finger carrier. The worm shaft is rotated by opposed pawls and ratchets operated through rods by studs suitably arranged on a drum which is swung towards and away from the rod ends on an arm oscillated by an eccentric. The drum is rocked by pawl and ratchet as it moves away from the rods. The height of the studs on the drum may be varied. In a rotary cylinder machine, the shaft B is secured to a member L mounted in a sleeve M supported by a bearing F. The sleeve M (which is driven at needle cylinder speed by bevel gearing N) bears a worm O engaging worm-wheel or segment P secured to the member L, which it thus carries round with it. To shog the finger carrier in either direction, by rotating sleeve L relative to member M, strikers are moved into the path of one or other of star-wheels S carried on the axles of bevelwheels R which gear with a bevel-wheel Q, Fig. 6 (not shown), on the worm-shaft. The strikers are moved to their operative positions by pattern drum and rod mechanism similar to that already described.
Patent GB-1174342-A (GB)
Title: Improvements in Cast Alloy Ingot.
IPC: C22B4/00
Filed: 1967-02-07
Abstract: 1,174,342. Casting processes. GENERAL ELECTRIC CO. 7 Feb., 1967 [6 June, 1966], No. 5804/67. Heading B3F. [Also in Division H5]  In producing alloy ingots by a consumable electrode vacuum arc-melting and casting process solidification cracks are prevented in the finished ingot by using an electrode formed of a central body 10, a bottom portion 14 and a top portion 12, said top portion being melted last to cover the top of the molten alloy of the ingot in a mould 18 and being made of a material that does not have a harmful effect on the alloy body of the ingot and that is ductile to prevent crack initiation and propagation into the ingot. The thickness of the top portion 12 when melted and solidified on the ingot has a nominal value of at least one inch. The central body 10 of the electrode may have a longitudinal hole 16 for holding alloying elements. In examples described the central body is made of sintered molybdenum and carbon rod with a hole 16 for holding titanium and zirconium alloying elements. The top and bottom portions 12, 14 were made of sintered unalloyed molybdenum. Other high temperature super alloys may be used such as tungsten base alloys and those based on iron, nickel and cobalt. In one example, cracking was prevented by providing a stress relief heat treatment process. The mould 18 is a water-cooled copper mould provided with a base padding 20 and chips 22 to facilitate arc starting.
Patent GB-875562-A (GB)
Title: Improvements in and relating to pyrimidine derivatives and the preparation thereof
IPC: C07D239/49
Filed: 1957-02-21
Abstract: The invention comprises compounds of the formula:  <FORM:0875562/IV (b)/1> (wherein R1, R2, R3 are alkyl groups with one to four carbon atoms and may be the same or different); the preparation thereof by formylating a hydrocinnamic ester of the formula:  <FORM:0875562/IV (b)/2> condensing the formyl derivative with guanidine, and chlorinating and subsequently aminating the intermediate 2 - amino - 4 - hydroxy - 5 - benzylpyrimidine; and pharmaceutical preparations containing the products (see Group VI).  In Example (1), ethyl-3,4,5-trimethoxyhydrocinnamate is reacted with ethyl formate and the formyl derivative condensed with guanidine to give 2-amino-4-hydroxy-5-(3,4,5-trimethoxybenzyl)-pyrimidine, which on treatment with phosphoryl chloride followed by ethanolic ammonia gives 2,4-diamino-5-(3,4,5-trimethoxybenzyl)-pyrimidine. Similarly made is 2,4-diamino - 5 - (3,5-dimethoxy-4-n-butoxybenzyl)-pyrimidine.  Ethyl 3,4,5-trimethoxyhydrocinnamate is made by hydrogenating in the presence of Raney nickel ethyl 3,4,5-trimethoxycinnamate, itself made by reacting 3,4,5-trimethoxycinnamic acid with absolute ethanol in the presence of conc. H2SO4. Ethyl 3,5 - dimethoxy-4-n-butoxyhydrocinnamate is similarly made from 3,5-dimethoxy-4-n-butoxy cinnamic acid, itself made from malonic acid and 3,5 - dimethoxy-4-n-butoxybenzaldehyde, which is made from n-butyl iodide and 3,5-dimethoxy-4-hydroxybenzaldehyde. Specifications 687,032 and 734,801 are referred to.ALSO:Antibacterial and antiprotozoal pharmaceutical preparations comprise a compound of the general formula <FORM:0875562/VI/1> (wherein R1, R2 and R3 represent identical or different C1-4 alkyl groups), together with a carrier therefor.  They may take the form of tablets, capsules or suspensions in liquids, and may additionally contain chemotherapeutic sulphonamides (e.g. sulphaguanidine). Specifications 687,032 and 734,801 are referred to.
Patent GB-661480-A (GB)
Title: Electric lead interconnector
Inventor: NOVIKOFF ALEXANDER
IPC: H01R4/24
Filed: 1949-03-03
Abstract: 661,480. Cable and wire couplings. SIRKE, C. March 3, 1950 [March 3, 1949], No. 5895/49. Class 38 (i). An interconnector comprises insulating members 1, 2 detachably or pivotally secured together, one on top of the other, the lower member 1 having embedded therein spaced conductors 5, 6 provided with needle-points 7, 9 at their ends so that leads 11, 12 inserted between the members are pierced by the needle points so that the conductors and the needlepoints connect the leads in series. Additional points 8 intermediate the conductor ends may be provided in order that a conductor 10 may be tapped thereby. Preferably the member 1 is grooved to accommodate the leads and the member 2 is secured in place thereon by screws 3 and nuts 4. In a modification, the member 2 is spaced by grooved integral end blocks from the member 1 and the intermediate points are dispensed with, Figs. 3 and 4 (not shown).
Patent GB-306555-A (GB)
Title: A machine for testing strength and elasticity of material
IPC: G01N3/04
Filed: 1929-02-22
Abstract: 306,555. Goodyear Tire &. Rubber Co., (Assignees of Kochheiser, M. L., and Steere, S. A.). Feb. 23, 1928, [Convention date]. Testing physical qualities of materials.-A machine for testing the strength and elasticity of cords &c. comprises a base 10 formed with guides 17, 18 in which slides a cross-head 25 on which and on the base are clamping means for a plurality of specimens. The clamps 31, 32 on the cross-head and the aligned clamps 72, 73 on the base are all alike and comprise a spring-pressed clamping member 38 which is moved down to clamp the cord by a cam 59 operated by a handle 67 and shaped to lock the member 38 when the cord has been clamped. The cross-head is moved by a crank 80 and screen 79 and the movement may be measured by a scale 20 provided on the base. 'Two cords may be clamped and extended by operating the screw 79 the points of breaking being noted for comparison. During the test the screw may be reversed when the cords will sag, the cord with the greater elastic properties sagging less than the other.
Patent GB-588899-A (GB)
Title: Improvements connected with hydraulically operated cranes
IPC: B66C23/90
Filed: 1945-03-09
Abstract: 588,899. Jib cranes. PEARSON, J. B. March 9; 1945, No. 5978. [Class 78 (iv)] Means for preventing a hydraulic crane from being used to lift a greater load than that appropriate to its jib radius and for preventing the jib when supporting a load at its maximum radius being luffed to a greater radius comprises a valve 2, interposed between the hydraulic pump and the lifting cylinder, which is controlled by a cam 4, actuated through links 5, 6 by the. jib 3, in such wise that the permissible pressure is increased as the radius of the jib is decreased, and also a spring-loaded piston 8 having a movement in accordance with the pressure delivered by the valve 2 and which serves to interpose one of the abutments 12 on a bar 11 movable with the jib, in the path of a hand-lever 14 of a control valve 15 of the luffing cylinder to prevent this lever being moved to exhaust position and the jib being luffed beyond its maximum radius. The cylinder 7 of the piston 8 is connected to the conduit leading from the valve 2 to the lifting cylinder, whilst the piston rod 9 is provided with a roller 10 engaging the bar 11.
Patent GB-1446172-A (GB)
Title: Detection of defective knitting needles of a knitting machine
IPC: D04B35/18
Filed: 1974-02-09
Abstract: 1446172 Knitting machines J VENCZEL 12 Sept 1974 [18 Sept 1973 9 Feb 1974] 43704/73 and 6002/74 Heading D1C In a circular knitting machine, a beam of light is so directed across the path of the needles on to photoelectric means that the hook of a damaged needle casts a shadow later than another part of the needle and the output from the photoelectric means indicates the existence of the damaged needle. An electric lamp 22 and photoelectric devices 18, 20 (e.g. photo voltaric elements) are carried on a limb 16 inside the needle circle. The shadow of an open needle with its hook 2 affects device 18 first whereas, if the hook is broken or the latch closed, device 20 is affected first. The signals from devices 18, 20 pass through amplifiers 42, 44; wave shapers 46, 48 and input lines 52, 54 to a gate device 50. Gate device 50 is closed by a signal from device 18 but if open on receiving a signal from device 20, a stop motion or warning signal is operated. In a modification, to detect needles broken off low down, an additional photo-electric device 20a is provided or device 20 may be divided in two by an opaque mask offset by one needle width from the others and coming before them in the direction of travel of the needles.
Patent GB-687107-A (GB)
Title: Improvements in floor-conditioning machines
IPC: A47L11/16
Filed: 1949-03-04
Abstract: 687,107. Floor cleaning and treating machines. FRASER, R., and TUSON, V. H. May 25, 1950 [March 4, 1949], No. 6018/49. Classes 60 and 138 (i). Relates to a floor conditioning machine of the kind in which a floor conditioning member such as a scrubbing brush or brush assembly is rotatable by a motor about a substantially vertical axis when the machine is in use and having an elongated handle by the manipulation of which the said axis may be slightly inclined to cause the machine to move itself bodily across the floor, wherein the handle is connected to the body of the machine by resilient coupling means. The machine, Fig. 1, comprises a body 10 and electric motor 28 which through gearing drives an inner brush holder 33 and an outer brush holder 35 in opposite directions. A circular plate 40 is fixed to the holder 33 and an annular plate 41 is fixed to the holder 35 and these plates may be loaded with bristles of fibre, whalebone or wire or with abrasive stones (not shown). Mounted at the back of the body 10 on a horizontal facing 12 is a bracket comprising two vertical and parallel plates 13. Pivotally mounted on the bracket are a pair of spaced trailing links 24 which support a shaft 23 for running wheels 22. The wheels can be raised or lowered relative to the body, by a link 25 fitted between the shaft 23 and a cross bar 26 pivoted between the plates 13, by means of an adjusting screw 27. A socket 15 for the handle 14 is mounted between the plates 13, Fig. 4, by means of a radially compressed rubber bush 16 fitted between outer and inner metal bushes 17, 18. The bush 17 is a force fit in the socket 15 and the bush 18 fits between the plates 13 and is locked by a key 19A to a bolt 19, the ends of the key engaging in keyways in the plates 13. A strut 20 pivoted to the socket is movable between two fixed positions by means of a spring catch arranged on the socket. In the position of the strut 20 shown in Fig. 1 the bush 16 is not subjected to any torque. Before operation the link 25 is adjusted so that the brush bristles or the stones rest squarely on the floor with the machine axis vertical. If the handle 14 is raised (the motor rotating clockwise) the bush 16 imparts a torque to the body to incline the brush axis forwardly and more pressure is exerted on the front bristles of the annular plate and since this plate is arranged to rotate anticlockwise the machine will be moved bodily to the right of the operator with the wheels 22 skidding to the right. If the handle is lowered (with the strut 20 released) more pressure will be exerted on the rear bristles of the annular plate so that the machine then moves bodily to the left of the operator. Since substantial movement of the handle is required to cause, through the brush 16, appreciable variation in weight distribution on the bristles the machine is not over-sensitive to slight unintentional movements of the handle.